railway RRB Technician Grade 1 Mock Test 2024 Physics Electric Charges and Coulomb's Law Coulomb’s Law
Choose the correct statement regarding the validity of Coulomb's law.
1. Coulomb's law is valid for charges at rest.
2. Coulomb's law is valid for charges in motion.
3. Seperation between the charges must be greater then 10-15 m.
4. It is valid only for point charges.
1
2, 3 and 4
2
1, 3 and 4
3
Both 2 and 4
4
Both 1 and 4